Hi Bradley Not sure which is what here... I got an excell graph called Progression of a 3:1 12th Stretch... kinda resembled the graph I sent off yesterday with the Sanderson data from a 1973 Journal. In anycase it is kind of interesting. If this is built on a linear division of the range D3 to F4, it might be fun to see what happens if one takes the RCT curve for this same area (albeit stretched enough to get the perfect 12th) and then proceed by setting the rest of the 12ths perfect. Let me see if I understand this graph correctly tho.. its built on actually sampled frequencies ? Or how did you arrive at them ? Strange behaviour by the 4:2, 6:3 and 8:4 that I am sure has a good explanation. :) I perhaps may get time to do a fairly complete tuning, sampling and graph this week. This is actually quite fun ! Cheers! RicB Bradley M. Snook wrote: >This is the chart that I did to go along with the calculations; ignore >the other attachment, I attached the wrong file. > >Bradley M. Snook > > > Richard Brekne RPT NPTF Griegakadamiet UiB
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